P0236 code meaning
Turbocharger/Supercharger Boost Sensor A Circuit Range/Performance
Powertrain system Generic code P02xx codes Check engine light
What P0236 means
Boost sensor A measures the absolute pressure between charge air cooler and throttle – GM calls it TIAP, Ford TIP – usually combined with an intake air temperature sensor; its voltage rises with pressure. With the ignition on and the engine stopped it must read the same as manifold and barometric pressure. P0236 is the plausibility fault: the signal is electrically valid but wrong. After a stop of at least 10 s boost, manifold and barometric pressure must match (Ford within about 7–9 kPa); while running, GM compares the sensor with models from airflow, manifold pressure and throttle and flags deviations such as more than 30 kPa from manifold pressure – with the warning light in the first trip. A charge air leak often triggers it too, because the model comparison drifts apart. VW traced a Tiguan case to contact resistance in a harness connector. With a sensor fault boost control is switched off and only the base boost of the wastegate spring remains, with a clear loss of power.
P0236 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyEasy, DIY possible
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P0236
- Check engine light on
- Loss of power, only base boost
- Hissing or whistling with a leak
Common causes of P0236
- Most likelyCharge air leak (hose, clamp, cooler) between turbo and throttle
- Most likelyBoost sensor dirty, oily or drifting
- PossibleContact resistance in connector or harness
- PossibleManifold or barometric sensor faulty (correlation partner)
- Less likelyIce or condensate in the charge air cooler in cold weather
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Boost pressure sensor aSensor wiringCharge air hoses
What each part of P0236 means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 2 | Area: fuel and air metering (injector circuit). |
| 36 | The exact fault in that area. |
What to do next
- Note P0236 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P0236
What does P0236 mean?
P0236 means "Turbocharger/Supercharger Boost Sensor A Circuit Range/Performance". Boost sensor A measures the absolute pressure between charge air cooler and throttle – GM calls it TIAP, Ford TIP – usually combined with an intake air temperature sensor; its voltage rises with pressure. It is a generic code, so it means the same on every make.
Is it safe to drive with P0236?
Drive gently and only to a workshop. With P0236 the car can go into limp mode (reduced power) to protect itself.
Will P0236 fail an emissions test?
Yes, it can. P0236 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is P0236 to fix?
Difficulty: easy. A typical repair takes 0.5 to 2 hours of work. A careful DIY repair is possible with basic tools and a scanner.
Will P0236 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.